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Q1. | A stepper motor is essentially |

A. | a synchronous motor [Correct Answer] |

B. | induction motor [Wrong Answer] |

C. | dc motor [Wrong Answer] |

D. | either (b) or (c) [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ A 3 phase series inverter has

12 thyristors

6 thyristors

3 thyristors

3 or 6 thyristors

⇒ The expression H

_{Z}= C cos(B

*x*) cos(A

*y*)

*yz*is for

TE wave

TM waves

both TE and TM waves

some TE and some TM waves

⇒ The amount of dielectric heating is inversely proportional to frequency.

TRUE

FALSE

⇒ The useful magnetic flux obtainable from any closed surface is

unity

constant

both (a) and (b)

none of the above

⇒ The function Z(

*s*) has a pole at infinity if

the degree of numerator and denominator of Z(

*s*) are equal

the numerator of Z(

*s*) is one degree higher than denominator

the denominator of Z(

*s*) is one degree higher than numerator

the degree of numerator and denominator are either equal or differ by one

⇒ Which DOS command improves memory usage?

MEM MAKER

MOVE

MEM IM

None on the above

⇒ A 3 x 8 decoder with two enable inputs is to be used to address 8 blocks of memory. What will be the size of each memory block when addressed from a sixteen bit bus with two MSBs used to enable the decoder?

2 K

4 K

16 K

64 K

⇒ In 8085 microprocessor with memory mapped I/O which of the following is true?

I/O devices have 16 bit addresses

I/O devices are accessed during IN and OUT instructions

There can be a maximum of 256 input and 256 output devices

Logic operations can not be performed

⇒ For the K map of the given figure the simplified Boolean expressio

ACD + ABD + BCD

ACD + BCD

ACD + ABD

none of the above

⇒ A periodic voltage

*v*(

*t*) = 1 + 4 sin ω

*t*+ 2 cos ω

*t*is applied across a 1 ohm resistance. The power dissipated is

1 W

11 W

21 W

24.5 W

⇒ ARQ stands for

Automatic Repeat Quest

Analog Repeat Request

Automatic Repeat Request

None Of the above

⇒ Tropospheric scatter is used with frequencies in the range of

VLF

HF

UHF

VHF

⇒ Iron has a body centred cubic structure.

TRUE

FALSE

⇒ The resistance of series field winding is a low resistance.

TRUE

FALSE

⇒ The primary colours are

blue and green

blue and red

red and green

blue, red and green

⇒ An XOR gate with 8 variable is as foll

255

127

128

256

⇒ For an I/p of V

_{s}= 5 sin ω

*t*(assuming ideal diode), circuit shown in the figure will behave

clipper, sine wave clipped at -2 V

clamper, sine wave clamped at -2 V

clamper, sine wave clamped at 0 volts

clipper, sine wave clipped at 2 V

⇒ The pole zero plot of the given figure is

non-minimum phase function

minimum phase function

all pass function

either (b) or (c)

⇒ If the poles lie in second quadrant, damping ratio is

1

less than 1

zero

more than 1

⇒ In a network with twelve circuit elements and five nodes, what is the minimum number of mesh equations?

24

12

10

8

⇒ To prevent overloading in the last IF amplifier one should use

variable sensitivity

squelch

double conversion

variable selectivity

⇒ In TE

_{10 }mode the largest electric field in a rectangular wave guide, occurs

along centre line of broad wall (

*i*.

*e*.

*x*=

*a*/2)

along the broad wall (

*i*.

*e*.

*x*= 0 and

*x*=

*a*)

either (a) or (b)

neither (a) nor (b)

⇒ The mass of proton and electron are

1.672 x 10

^{-26}kg and 9.107 x 10

^{-31}kg respectively

9.107 x 10

^{-26}kg and 9.107 x 10

^{-31}kg respectively

9.107 x 10

^{-29}kg and 9.107 x 10

^{-31}kg respectively

9.107 x 10

^{-30}kg and 9.107 x 10

^{-31}kg respectively

⇒

**Assertion (A):** In a parallel in-serial out shift register data is loaded one bit-at a time

**Reason (R):** A serial in-serial out shift register can be used to introduce a time delay.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is true, R is false

A is false, R is true

⇒ If the drift velocity of holes under a field gradient of 100 V/m in 5 m/s, their mobility (in SI units) is

0.05

0.5

50

500

⇒ For emitter-couple logic, the switching speed is very high because

negative logic is used

the transistors are not saturated when conducting

emitter-coupled transistors are used

multi-emitter transistors are used

⇒ Mutual impedance is not depend upon

magnitude of induced current

tuning condition

self impedance

phase relationship between induced and original currents

⇒ Consider the network: Impedance of this network as a function of the complex frequency is consists of a certain number of zeros and poles. What is the location of po

-2

-2, ∞

2

2, ∞

⇒ In a FM receiver, amplitude limiter

amplifiers low frequency signals

reduces the amplitude of signals

eliminates any change in amplitude of received FM signals

none of the above

⇒ The number of flip-flops required to build a mod-19 counter is

4

5

6

7